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<div><a href="../index.html">Home</a> &gt;  <a href="index.html">fvcom_prepro</a> &gt; example_FVCOM_wind_ts_speed.m</div>

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<h1>example_FVCOM_wind_ts_speed
</h1>

<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="box"><strong>example file for FVCOM, time-varying/spatially constant wind forcing as speed</strong></div>

<h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="box"><strong>function example_FVCOM_wind_ts_speed </strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="fragment"><pre class="comment"> example file for FVCOM, time-varying/spatially constant wind forcing as speed

 function example_FVCOM_wind_ts_speed

 DESCRIPTION:
    Write a time-varying, spatially constant wind file
    This is TEMPLATE program to be used as an example
    Do not commit your user-defined programs to the repository
    It requires USER Modification to work 

 INPUT
   
 OUTPUT:
    NetCDF WindFile

 EXAMPLE USAGE
    example_FVCOM_wind_ts_speed

 Author(s):  
    Geoff Cowles (University of Massachusetts Dartmouth)

 Revision history
   
==============================================================================</pre></div>

<!-- crossreference -->
<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
This function calls:
<ul style="list-style-image:url(../matlabicon.gif)">
</ul>
This function is called by:
<ul style="list-style-image:url(../matlabicon.gif)">
</ul>
<!-- crossreference -->



<h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
<div class="fragment"><pre>0001 <a name="_sub0" href="#_subfunctions" class="code">function example_FVCOM_wind_ts_speed</a>
0002 
0003 <span class="comment">% example file for FVCOM, time-varying/spatially constant wind forcing as speed</span>
0004 <span class="comment">%</span>
0005 <span class="comment">% function example_FVCOM_wind_ts_speed</span>
0006 <span class="comment">%</span>
0007 <span class="comment">% DESCRIPTION:</span>
0008 <span class="comment">%    Write a time-varying, spatially constant wind file</span>
0009 <span class="comment">%    This is TEMPLATE program to be used as an example</span>
0010 <span class="comment">%    Do not commit your user-defined programs to the repository</span>
0011 <span class="comment">%    It requires USER Modification to work</span>
0012 <span class="comment">%</span>
0013 <span class="comment">% INPUT</span>
0014 <span class="comment">%</span>
0015 <span class="comment">% OUTPUT:</span>
0016 <span class="comment">%    NetCDF WindFile</span>
0017 <span class="comment">%</span>
0018 <span class="comment">% EXAMPLE USAGE</span>
0019 <span class="comment">%    example_FVCOM_wind_ts_speed</span>
0020 <span class="comment">%</span>
0021 <span class="comment">% Author(s):</span>
0022 <span class="comment">%    Geoff Cowles (University of Massachusetts Dartmouth)</span>
0023 <span class="comment">%</span>
0024 <span class="comment">% Revision history</span>
0025 <span class="comment">%</span>
0026 <span class="comment">%==============================================================================</span>
0027 warning off
0028 subname = <span class="string">'example_FVCOM_wind_ts'</span>;
0029 fprintf(<span class="string">'\n'</span>)
0030 fprintf([<span class="string">'begin : '</span> subname <span class="string">'\n'</span>])
0031 
0032 <span class="comment">%------------------------------------------------------------------------------</span>
0033 <span class="comment">% create a dataset</span>
0034 <span class="comment">%------------------------------------------------------------------------------</span>
0035 
0036 <span class="comment">% make a timeframe</span>
0037 <span class="comment">% tbeg = greg2julian(2009,1,1,0,0,0)-2400000.5;</span>
0038 <span class="comment">% tend = greg2julian(2010,1,1,0,0,0)-2400000.5;</span>
0039 tbeg = 0;
0040 tend = 31;
0041 time = tbeg:1:tend;
0042 nTimes = prod(size(time));
0043 
0044 <span class="comment">% make up a fake time varying wind in m/s at 10-m above the water surface</span>
0045 u10 = 10*ones(nTimes,1); 
0046 v10 = zeros(nTimes,1); 
0047 
0048 <span class="comment">%------------------------------------------------------------------------------</span>
0049 <span class="comment">% write output to time-varying, spatially constant FVCOM wind file</span>
0050 <span class="comment">%------------------------------------------------------------------------------</span>
0051 fvcom_forcing_file = <span class="string">'tst_wind.nc'</span>; 
0052 nc = netcdf(fvcom_forcing_file, <span class="string">'clobber'</span>);            
0053 nc.references = <span class="string">'http://fvcom.smast.umassd.edu'</span>; 
0054 nc.source = <span class="string">'single-point time-dependent surface forcing'</span>; 
0055 nc.institution = <span class="string">'School for Marine Science and Technology'</span> ;
0056 nc.history = <span class="string">'generated using the fvcom-toolbox'</span>;
0057 
0058 
0059   
0060 <span class="comment">% dimensions</span>
0061 nc(<span class="string">'time'</span>) = 0;
0062 
0063 <span class="comment">% time vars</span>
0064 nc{<span class="string">'time'</span>} = ncfloat(<span class="string">'time'</span>);
0065 nc{<span class="string">'time'</span>}.long_name = <span class="string">'time'</span>;
0066 nc{<span class="string">'time'</span>}.units = <span class="string">'days since 1858-11-17 00:00:00'</span>;
0067 nc{<span class="string">'time'</span>}.format = <span class="string">'modified julian day (MJD)'</span>;
0068 nc{<span class="string">'time'</span>}.time_zone = <span class="string">'UTC'</span>;
0069   
0070 nc{<span class="string">'Itime'</span>} = ncint(<span class="string">'time'</span>);
0071 nc{<span class="string">'Itime'</span>}.units = <span class="string">'days since 1858-11-17 00:00:00'</span>;
0072 nc{<span class="string">'Itime'</span>}.format = <span class="string">'modified julian day (MJD)'</span>;
0073 nc{<span class="string">'Itime'</span>}.time_zone = <span class="string">'UTC'</span>;
0074 
0075 nc{<span class="string">'Itime2'</span>} = ncint(<span class="string">'time'</span>);
0076 nc{<span class="string">'Itime2'</span>}.units = <span class="string">'msec since 00:00:00'</span>;
0077 nc{<span class="string">'Itime2'</span>}.time_zone = <span class="string">'UTC'</span>;
0078 
0079 
0080 nc{<span class="string">'U10'</span>} = ncfloat(<span class="string">'time'</span>);
0081 nc{<span class="string">'U10'</span>}.long_name = <span class="string">'Eastward Wind Velocity'</span>;
0082 nc{<span class="string">'U10'</span>}.standard_name = <span class="string">'Wind Velocity'</span>;
0083 nc{<span class="string">'U10'</span>}.units = <span class="string">'m/s'</span>;
0084 nc{<span class="string">'U10'</span>}.type = <span class="string">'data'</span>;
0085 
0086 nc{<span class="string">'V10'</span>} = ncfloat(<span class="string">'time'</span>);
0087 nc{<span class="string">'V10'</span>}.long_name = <span class="string">'Northward Wind Velocity'</span>;
0088 nc{<span class="string">'V10'</span>}.standard_name = <span class="string">'Wind Velocity'</span>;
0089 nc{<span class="string">'V10'</span>}.units = <span class="string">'m/s'</span>;
0090 nc{<span class="string">'V10'</span>}.type = <span class="string">'data'</span>;
0091 
0092 <span class="comment">% dump time</span>
0093 nc{<span class="string">'time'</span>}(1:nTimes) = time; 
0094 nc{<span class="string">'Itime'</span>}(1:nTimes) = floor(time); 
0095 nc{<span class="string">'Itime2'</span>}(1:nTimes) = mod(time,1)*24*3600*1000.;
0096 
0097 nc{<span class="string">'U10'</span>}(1:nTimes) = u10;  
0098 nc{<span class="string">'V10'</span>}(1:nTimes) = v10; 
0099 
0100 ierr = close(nc);
0101 
0102 fprintf([<span class="string">'end   : '</span> subname <span class="string">'\n'</span>])
0103 
0104 
0105</pre></div>
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